IFREMER/Kélonia satellite tracked late juvenile loggerhead sea turtles from Réunion Island 2008-2012
IFREMER and Kélonia

Dataset credit

Institut Français pour L'Exploitation de la Mer (IFREMER) and Kélonia

Contacts

RoleNameOrganization 
Primary contact Jérôme Bourjea IFREMER
Data entry Connie Kot Duke University

Citation

Bourjea, J. 2014. IFREMER/Kélonia satellite tracked late juvenile loggerhead sea turtles from Réunion Island 2008-2012. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/1014) on yyyy-mm-dd.

Abstract

A satellite tracking study was conducted on juvenile loggerhead sea turtles in the Indian Ocean. Eighteen individuals were fitted with transponders and tracked from Réunion Island (21.2°S, 55.3°E) in order to investigate movements and diving patterns. Nine turtles swam north towards Oman (20.5°N, 58.8°E), where one of the world’s largest rookeries of loggerheads is located. Three individuals travelled south towards South-Africa and Madagascar, countries that also host loggerhead nesting grounds. Fourteen of the transmitters relayed diving profiles. A dichotomy between diurnal and nocturnal diving behavior was observed. A greater number of shorter dives occurred during the day. Diving behavior also differed according to movement behavior as individuals spent more time in subsurface waters (<10 m) during transit phases. The study provides an improved understanding of the oceanic movements and diving behavior of juvenile loggerheads. The results address a significant gap in the understanding of loggerhead oceanic movements and may help with the conservation of the species.

Purpose

The purpose was to study the movement and diving behavior of late juvenile loggerheads in the western Indian Ocean.

Supplemental information

N/A

References

Attributes

Overview

Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downlodable online. Other attributes may be obtained upon provider's permission unless otherwise noted below.

This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.

Attributes in dataset provided

Attribute (table column)Description
oidUnique ID (created by OBIS-SEAMAP)
latitudeLatitude (decimal degrees)
longitudeLongitude (decimal degrees)
tag_idTag ID
obs_dateDate of observation
date_timeDate and time of observation
obs_timeTime of observation
time_zoneTime zone of the obs_time values (always UTC)
notes
obs_countNumber of animals sighted (1)
age_classJuvenile
sp_tsnSpecies ITIS TSN
lcLocation class
sp_codeSpecies code
sp_obsSpecies observed
commonCommon name of animal
providerData provider
ownerData owner
beachBeach of tagging location
countryCountry of tagging location
cite1Citation
geom
OBIS-SEAMAP ID1014
Seabirds0
Marine mammals0
Sea turtles20,144
Rays and sharks0
Other species0
Non spatial0
Non species0
Total20,144
Date, Begin2008-10-06
Date, End2012-12-14
Temporal prec.111111
Latitude-41.30 - 20.15
Longitude18.97 - 67.84
Coord. prec.5 decimal digits
PlatformTag
Data typeTelemetry location
TracklinesYES (ID: 1015)
Contr. throughSEAMAP_TO_SWOT
Registered2013-10-22
Updated2014-08-06
StatusPublished
Sharing policy CC-BY-NC (Minimum)
Also availalbe from iOBIS
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics
1